US6543743B2 - Gas control valve - Google Patents

Gas control valve Download PDF

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Publication number
US6543743B2
US6543743B2 US09/902,670 US90267001A US6543743B2 US 6543743 B2 US6543743 B2 US 6543743B2 US 90267001 A US90267001 A US 90267001A US 6543743 B2 US6543743 B2 US 6543743B2
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US
United States
Prior art keywords
rod
path
sleeve
passage
control valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US09/902,670
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US20030010947A1 (en
Inventor
Arlo H. T. Lin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Pro Iroda Industries Inc
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Pro Iroda Industries Inc
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Filing date
Publication date
Application filed by Pro Iroda Industries Inc filed Critical Pro Iroda Industries Inc
Priority to US09/902,670 priority Critical patent/US6543743B2/en
Assigned to PRO-IRODA INDUSTRIES, INC. reassignment PRO-IRODA INDUSTRIES, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LIN, ARLO H.T.
Publication of US20030010947A1 publication Critical patent/US20030010947A1/en
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Publication of US6543743B2 publication Critical patent/US6543743B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N1/00—Regulating fuel supply
    • F23N1/007—Regulating fuel supply using mechanical means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K31/00—Actuating devices; Operating means; Releasing devices
    • F16K31/002—Actuating devices; Operating means; Releasing devices actuated by temperature variation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N5/00—Systems for controlling combustion
    • F23N5/02—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium
    • F23N5/04—Systems for controlling combustion using devices responsive to thermal changes or to thermal expansion of a medium using bimetallic elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2225/00—Measuring
    • F23N2225/08—Measuring temperature
    • F23N2225/16—Measuring temperature burner temperature
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23N—REGULATING OR CONTROLLING COMBUSTION
    • F23N2231/00—Fail safe
    • F23N2231/16—Fail safe using melting materials or shape memory alloys
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/1842—Ambient condition change responsive
    • Y10T137/1915—Burner gas cutoff

Definitions

  • the present invention relates to a gas control valve which uses an activation member made from memory alloy to control movement of a rod which is engaged with a gas passage in a gas burner.
  • a conventional gas control valve is shown in FIG. 1 and generally includes two blocks 10 overlapped with each other, and a mediate plate 11 is clamped between the two blocks 10 .
  • a gas path 13 is defined between the two blocks 10 and the mediate plate 11 has a passage 12 defined therethrough which communicates with the gas path 13 .
  • An adjusting bolt 14 is movably inserted in one of the two blocks 10 and a tip of the adjusting bolt 14 is engaged with said passage 12 so that the user may rotate the adjusting bolt 14 to control a gap between the tip of the adjusting bolt 14 and the passage 12 .
  • the volume of the gas passing through the passage 12 can be controlled. It requires a tool to adjust the adjusting bolt 14 and the adjusting bolt 14 is usually located in an inside of the burners so that the users are not encouraged to do the job.
  • a gas control, valve includes a first element, a second element, a mediate element, a sleeve, a rod and a control element.
  • the first element defines a first path.
  • the second element defines a second path and a hole in communication with the second path.
  • the mediate element defines a passage. The mediate element is sandwiched between the first and second elements so that the first path is in communication with the second path through the passage.
  • the sleeve includes a first end and a second end. The first end of the sleeve is inserted into the hole.
  • the rod includes a first end and a second end.
  • the rod is inserted into the sleeve so that the first end of the rod is inserted into the second path and that the second end of the rod is exposed through the second end of the sleeve.
  • the control element is connected between the second end of the sleeve and the second end of the rod. Normally, the control element keeps the rod in a first position wherein the first end of the rod opens the passage. When subjected to heat, the control element moves the rod to a second position wherein the first end of the rod closes the passage.
  • FIG. 1 is a cross sectional view to show a conventional gas control valve
  • FIG. 2 is an exploded view to show a gas control valve of the present invention
  • FIG. 3 is a cross sectional view to show the gas control valve of the present invention.
  • FIG. 4 is a cross sectional view to show that the rod is lowered to seal the passage in the mediate plate in the gas control valve of the present invention.
  • the gas control valve of the present invention comprises a first part 21 having a first gas path 20 defined in a top surface thereof and a mediate plate 23 is located on said top surface of said first part 21 .
  • a passage 24 is defined through said mediate plate 23 and communicates with said first gas path 20 .
  • a second part 22 is located on said mediate plate 23 and has a second gas path 200 defined in a bottom surface thereof The passage 24 communicates with the first gas path 20 and the second gas path 200 .
  • a hole 220 is defined through said second part 22 and communicates with said second gas path 200 .
  • a sleeve 40 has a first end threadedly engaged with said hole 220 and a rod 34 is movably,received in said sleeve 40 .
  • a first end 30 of said rod 34 has a plurality of rings 33 mounted thereto which snugly engaged with an inside of said hole 220 .
  • An end disk 32 is connected to said first end 30 of said rod 34 .
  • a memory member or bi-metal 60 is fixedly mounted to a second end 35 of said rod 34 and comprises a first plate 62 and a second plate 61 .
  • the second end 35 of the rod 34 extends out from the sleeve 40 .
  • the first plate 62 is mounted to the rod 34 and fixedly connected on a second end of said sleeve 40 .
  • the second plate 61 is fixedly mounted to said second end 35 of said rod 34 .
  • a head 50 is connected to said second end 35 of said rod 34 and said second plate 61 contacts an underside of said head 50 .
  • the memory member or bi-metal 60 is located in the gas combustion chamber (not shown) so that it is sensory by the temperature in the combustion chamber. If the temperature of the combustion chamber is located in a pre-decided range, the memory member or bi-metal 60 will not be deformed. When the temperature, of the combustion chamber is out of the range, the memory member or bi-metal 60 is deformed and the first plate 61 is lowered to move the end disk 32 to seal the passage 24 to stop the gas passing through the passage 24 .
  • the gas control valve is able to control the volume of gas flow automatically.

Abstract

A gas control valve includes a first element, a second element, a mediate element, a sleeve, a rod and a control element. The first element defines a first path. The second element defines a second path and a hole in communication with the second path. The mediate clement defines a passage. The mediate clement is sandwiched between the first and second elements so that the first path is in communication with the second path through the passage. The sleeve includes a first end and a second end. The first end of the sleeve is inserted into the hole. The rod includes a first and a second end. The rod is inserted into the sleeve so that the first end of the rod is inserted into the second path and that the second end of the rod is exposed through the second end of the sleeve. The control element is connected between the second end of the sleeve and the second end of rod. Normally, the control element keeps the rod in a first position wherein the first end of the rod opens the passage. When subjected to heat, the control element moves the rod to a second position wherein the first end of the rod closes the passage.

Description

FIELD OF THE INVENTION
The present invention relates to a gas control valve which uses an activation member made from memory alloy to control movement of a rod which is engaged with a gas passage in a gas burner.
BACKGROUND OF THE INVENTION
A conventional gas control valve is shown in FIG. 1 and generally includes two blocks 10 overlapped with each other, and a mediate plate 11 is clamped between the two blocks 10. A gas path 13 is defined between the two blocks 10 and the mediate plate 11 has a passage 12 defined therethrough which communicates with the gas path 13. An adjusting bolt 14 is movably inserted in one of the two blocks 10 and a tip of the adjusting bolt 14 is engaged with said passage 12 so that the user may rotate the adjusting bolt 14 to control a gap between the tip of the adjusting bolt 14 and the passage 12. By this way, the volume of the gas passing through the passage 12 can be controlled. It requires a tool to adjust the adjusting bolt 14 and the adjusting bolt 14 is usually located in an inside of the burners so that the users are not encouraged to do the job.
SUMMARY OF THE INVENTION
It is the primary objective of the present invention to provide a structurally simple gas control valve that normally allows gas to flow and when subject to heat blocks the gas.
According to the present invention, a gas control, valve includes a first element, a second element, a mediate element, a sleeve, a rod and a control element. The first element defines a first path. The second element defines a second path and a hole in communication with the second path. The mediate element defines a passage. The mediate element is sandwiched between the first and second elements so that the first path is in communication with the second path through the passage. The sleeve includes a first end and a second end. The first end of the sleeve is inserted into the hole. The rod includes a first end and a second end. The rod is inserted into the sleeve so that the first end of the rod is inserted into the second path and that the second end of the rod is exposed through the second end of the sleeve. The control element is connected between the second end of the sleeve and the second end of the rod. Normally, the control element keeps the rod in a first position wherein the first end of the rod opens the passage. When subjected to heat, the control element moves the rod to a second position wherein the first end of the rod closes the passage.
The present invention will become more obvious from the following description when taken in connection with the accompanying drawings which show, for purposes of illustration only, a preferred embodiment in accordance with the present invention.
BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cross sectional view to show a conventional gas control valve;
FIG. 2 is an exploded view to show a gas control valve of the present invention;
FIG. 3 is a cross sectional view to show the gas control valve of the present invention; and
FIG. 4 is a cross sectional view to show that the rod is lowered to seal the passage in the mediate plate in the gas control valve of the present invention.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
Referring to FIGS. 2 and 3, the gas control valve of the present invention comprises a first part 21 having a first gas path 20 defined in a top surface thereof and a mediate plate 23 is located on said top surface of said first part 21. A passage 24 is defined through said mediate plate 23 and communicates with said first gas path 20. A second part 22 is located on said mediate plate 23 and has a second gas path 200 defined in a bottom surface thereof The passage 24 communicates with the first gas path 20 and the second gas path 200. A hole 220 is defined through said second part 22 and communicates with said second gas path 200.
A sleeve 40 has a first end threadedly engaged with said hole 220 and a rod 34 is movably,received in said sleeve 40. A first end 30 of said rod 34 has a plurality of rings 33 mounted thereto which snugly engaged with an inside of said hole 220. An end disk 32 is connected to said first end 30 of said rod 34.
A memory member or bi-metal 60 is fixedly mounted to a second end 35 of said rod 34 and comprises a first plate 62 and a second plate 61. The second end 35 of the rod 34 extends out from the sleeve 40. The first plate 62 is mounted to the rod 34 and fixedly connected on a second end of said sleeve 40. The second plate 61 is fixedly mounted to said second end 35 of said rod 34. A head 50 is connected to said second end 35 of said rod 34 and said second plate 61 contacts an underside of said head 50.
A shown in FIG. 4, the memory member or bi-metal 60 is located in the gas combustion chamber (not shown) so that it is sensory by the temperature in the combustion chamber. If the temperature of the combustion chamber is located in a pre-decided range, the memory member or bi-metal 60 will not be deformed. When the temperature, of the combustion chamber is out of the range, the memory member or bi-metal 60 is deformed and the first plate 61 is lowered to move the end disk 32 to seal the passage 24 to stop the gas passing through the passage 24. The gas control valve is able to control the volume of gas flow automatically.
While we have shown and described the embodiment in accordance with the present invention, it should be clear to those skilled in the art that further embodiments may be made without departing from the scope of the present invention.

Claims (6)

What is claimed is:
1. A gas control valve, comprising:
a) a first element (21) defining a first path (20);
b) a second element (22) defining a second path (200) and a hole (220) in communication with the second path (200);
c) a mediate element (23) defining a passage (24), the mediate element (23) being sandwiched between the first and second elements (21,22) so that the first path (20) is in communication with the second path (200) through the passage (24);
d) a sleeve (40) including a first end and a second end, the first end of the sleeve (40) being inserted in the hole (220);
e) a rod (34) including a first and a second end, the rod (34) being inserted in the sleeve (40) so that the first end of the rod (34) is inserted in the second path (200) and that the second end of the rod (34) is exposed through the second end of the sleeve (40); and
f) a control element (60) linked between the second end of the sleeve (40) and the second end of rod (34) so as to keep the rod (34) in a first position wherein the first end of the rod (34) opens the passage (24) and when subjected to heat moves the rod (34) to a second position wherein the first end of the rod (34) closes the passage (24).
2. The gas control valve as claimed in claim 5, wherein said first end of said rod has a plurality of rings mounted thereto which snugly engage with an inside of said hole.
3. The gas control valve as claimed in claim 2 further comprising an end disk connected to said first end of said rod.
4. The gas control valve according to claim 1, wherein the control element (60) is a bi-metal element.
5. The gas control valve according to claim 4, wherein the bi-metal element (60) includes a first plate (62) connected with the second end of the sleeve (40) and a second plate (61) connected with the second end of rod (34).
6. The gas control valve according to claim 5, wherein when the control element (60) is subjected to heat, the second plate (61) thereof pivots toward the first plate (62) thereof.
US09/902,670 2001-07-12 2001-07-12 Gas control valve Expired - Fee Related US6543743B2 (en)

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US09/902,670 US6543743B2 (en) 2001-07-12 2001-07-12 Gas control valve

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US6543743B2 true US6543743B2 (en) 2003-04-08

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2040864A (en) * 1931-08-31 1936-05-19 Milwaukee Gas Specialty Co Control device
US2274145A (en) * 1940-07-22 1942-02-24 Roy W Johnson Temperature compensating metering valve
US2649777A (en) * 1953-08-25 Safety valve device for gas burners
US2729221A (en) * 1950-09-12 1956-01-03 Gorham George Safety device for gas burning appliances
US3851853A (en) * 1973-04-23 1974-12-03 Hoke Inc Valve
US3877476A (en) * 1973-08-22 1975-04-15 Kenco Engineering Company Heat actuated valve
US3951381A (en) * 1974-06-12 1976-04-20 Whitener Robert V Disc valves
US4508314A (en) * 1984-01-18 1985-04-02 Eaton Corporation Gas valve
US4593882A (en) * 1983-01-17 1986-06-10 International Telephone And Telegraph Corporation Zone control valve
US4836496A (en) * 1987-08-27 1989-06-06 Johnson Service Company SMF actuator
US6003833A (en) * 1997-10-16 1999-12-21 Industrial Technology Research Institute Integrated micro pressure-resistant flow control module

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2649777A (en) * 1953-08-25 Safety valve device for gas burners
US2040864A (en) * 1931-08-31 1936-05-19 Milwaukee Gas Specialty Co Control device
US2274145A (en) * 1940-07-22 1942-02-24 Roy W Johnson Temperature compensating metering valve
US2729221A (en) * 1950-09-12 1956-01-03 Gorham George Safety device for gas burning appliances
US3851853A (en) * 1973-04-23 1974-12-03 Hoke Inc Valve
US3877476A (en) * 1973-08-22 1975-04-15 Kenco Engineering Company Heat actuated valve
US3951381A (en) * 1974-06-12 1976-04-20 Whitener Robert V Disc valves
US4593882A (en) * 1983-01-17 1986-06-10 International Telephone And Telegraph Corporation Zone control valve
US4508314A (en) * 1984-01-18 1985-04-02 Eaton Corporation Gas valve
US4836496A (en) * 1987-08-27 1989-06-06 Johnson Service Company SMF actuator
US6003833A (en) * 1997-10-16 1999-12-21 Industrial Technology Research Institute Integrated micro pressure-resistant flow control module

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AS Assignment

Owner name: PRO-IRODA INDUSTRIES, INC., TAIWAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LIN, ARLO H.T.;REEL/FRAME:011985/0893

Effective date: 20010629

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20070408